d5859615 |
1 | /* |
2 | * winstore.c: Windows-specific implementation of the interface |
3 | * defined in storage.h. |
4 | */ |
5 | |
d5859615 |
6 | #include <stdio.h> |
49bad831 |
7 | #include <stdlib.h> |
9a30e26b |
8 | #include <limits.h> |
d5859615 |
9 | #include "putty.h" |
10 | #include "storage.h" |
11 | |
d1622aed |
12 | static const char *const puttystr = PUTTY_REG_POS "\\Sessions"; |
13 | |
32874aea |
14 | static char seedpath[2 * MAX_PATH + 10] = "\0"; |
d5859615 |
15 | |
c85623f9 |
16 | static const char hex[16] = "0123456789ABCDEF"; |
d5859615 |
17 | |
c85623f9 |
18 | static void mungestr(const char *in, char *out) |
32874aea |
19 | { |
d5859615 |
20 | int candot = 0; |
21 | |
22 | while (*in) { |
23 | if (*in == ' ' || *in == '\\' || *in == '*' || *in == '?' || |
32874aea |
24 | *in == '%' || *in < ' ' || *in > '~' || (*in == '.' |
25 | && !candot)) { |
d5859615 |
26 | *out++ = '%'; |
32874aea |
27 | *out++ = hex[((unsigned char) *in) >> 4]; |
28 | *out++ = hex[((unsigned char) *in) & 15]; |
d5859615 |
29 | } else |
30 | *out++ = *in; |
31 | in++; |
32 | candot = 1; |
33 | } |
34 | *out = '\0'; |
35 | return; |
36 | } |
37 | |
c85623f9 |
38 | static void unmungestr(const char *in, char *out, int outlen) |
32874aea |
39 | { |
d5859615 |
40 | while (*in) { |
41 | if (*in == '%' && in[1] && in[2]) { |
42 | int i, j; |
43 | |
32874aea |
44 | i = in[1] - '0'; |
45 | i -= (i > 9 ? 7 : 0); |
46 | j = in[2] - '0'; |
47 | j -= (j > 9 ? 7 : 0); |
d5859615 |
48 | |
32874aea |
49 | *out++ = (i << 4) + j; |
50 | if (!--outlen) |
51 | return; |
d5859615 |
52 | in += 3; |
d1622aed |
53 | } else { |
d5859615 |
54 | *out++ = *in++; |
32874aea |
55 | if (!--outlen) |
56 | return; |
57 | } |
d5859615 |
58 | } |
59 | *out = '\0'; |
60 | return; |
61 | } |
62 | |
3f935d5b |
63 | void *open_settings_w(const char *sessionname, char **errmsg) |
32874aea |
64 | { |
d1622aed |
65 | HKEY subkey1, sesskey; |
66 | int ret; |
67 | char *p; |
68 | |
3f935d5b |
69 | *errmsg = NULL; |
70 | |
90bf4cce |
71 | if (!sessionname || !*sessionname) |
72 | sessionname = "Default Settings"; |
73 | |
3d88e64d |
74 | p = snewn(3 * strlen(sessionname) + 1, char); |
d1622aed |
75 | mungestr(sessionname, p); |
32874aea |
76 | |
d1622aed |
77 | ret = RegCreateKey(HKEY_CURRENT_USER, puttystr, &subkey1); |
78 | if (ret != ERROR_SUCCESS) { |
32874aea |
79 | sfree(p); |
3f935d5b |
80 | *errmsg = dupprintf("Unable to create registry key\n" |
c19a50ed |
81 | "HKEY_CURRENT_USER\\%s", puttystr); |
32874aea |
82 | return NULL; |
d1622aed |
83 | } |
84 | ret = RegCreateKey(subkey1, p, &sesskey); |
d1622aed |
85 | RegCloseKey(subkey1); |
3f935d5b |
86 | if (ret != ERROR_SUCCESS) { |
87 | *errmsg = dupprintf("Unable to create registry key\n" |
c19a50ed |
88 | "HKEY_CURRENT_USER\\%s\\%s", puttystr, p); |
2d3f15fa |
89 | sfree(p); |
32874aea |
90 | return NULL; |
3f935d5b |
91 | } |
2d3f15fa |
92 | sfree(p); |
32874aea |
93 | return (void *) sesskey; |
d1622aed |
94 | } |
95 | |
c85623f9 |
96 | void write_setting_s(void *handle, const char *key, const char *value) |
32874aea |
97 | { |
d1622aed |
98 | if (handle) |
32874aea |
99 | RegSetValueEx((HKEY) handle, key, 0, REG_SZ, value, |
100 | 1 + strlen(value)); |
d1622aed |
101 | } |
102 | |
c85623f9 |
103 | void write_setting_i(void *handle, const char *key, int value) |
32874aea |
104 | { |
d1622aed |
105 | if (handle) |
32874aea |
106 | RegSetValueEx((HKEY) handle, key, 0, REG_DWORD, |
e66c3912 |
107 | (CONST BYTE *) &value, sizeof(value)); |
d1622aed |
108 | } |
109 | |
32874aea |
110 | void close_settings_w(void *handle) |
111 | { |
112 | RegCloseKey((HKEY) handle); |
d1622aed |
113 | } |
114 | |
c85623f9 |
115 | void *open_settings_r(const char *sessionname) |
32874aea |
116 | { |
d1622aed |
117 | HKEY subkey1, sesskey; |
118 | char *p; |
119 | |
90bf4cce |
120 | if (!sessionname || !*sessionname) |
121 | sessionname = "Default Settings"; |
122 | |
3d88e64d |
123 | p = snewn(3 * strlen(sessionname) + 1, char); |
d1622aed |
124 | mungestr(sessionname, p); |
125 | |
126 | if (RegOpenKey(HKEY_CURRENT_USER, puttystr, &subkey1) != ERROR_SUCCESS) { |
127 | sesskey = NULL; |
128 | } else { |
129 | if (RegOpenKey(subkey1, p, &sesskey) != ERROR_SUCCESS) { |
130 | sesskey = NULL; |
131 | } |
132 | RegCloseKey(subkey1); |
133 | } |
134 | |
dcbde236 |
135 | sfree(p); |
d1622aed |
136 | |
32874aea |
137 | return (void *) sesskey; |
d1622aed |
138 | } |
139 | |
c85623f9 |
140 | char *read_setting_s(void *handle, const char *key, char *buffer, int buflen) |
32874aea |
141 | { |
d1622aed |
142 | DWORD type, size; |
143 | size = buflen; |
144 | |
145 | if (!handle || |
32874aea |
146 | RegQueryValueEx((HKEY) handle, key, 0, |
147 | &type, buffer, &size) != ERROR_SUCCESS || |
148 | type != REG_SZ) return NULL; |
d1622aed |
149 | else |
32874aea |
150 | return buffer; |
d1622aed |
151 | } |
d5859615 |
152 | |
c85623f9 |
153 | int read_setting_i(void *handle, const char *key, int defvalue) |
32874aea |
154 | { |
d1622aed |
155 | DWORD type, val, size; |
156 | size = sizeof(val); |
157 | |
158 | if (!handle || |
32874aea |
159 | RegQueryValueEx((HKEY) handle, key, 0, &type, |
e66c3912 |
160 | (BYTE *) &val, &size) != ERROR_SUCCESS || |
d1622aed |
161 | size != sizeof(val) || type != REG_DWORD) |
162 | return defvalue; |
163 | else |
164 | return val; |
165 | } |
166 | |
9a30e26b |
167 | int read_setting_fontspec(void *handle, const char *name, FontSpec *result) |
168 | { |
169 | char *settingname; |
170 | FontSpec ret; |
171 | |
172 | if (!read_setting_s(handle, name, ret.name, sizeof(ret.name))) |
173 | return 0; |
174 | settingname = dupcat(name, "IsBold", NULL); |
175 | ret.isbold = read_setting_i(handle, settingname, -1); |
176 | sfree(settingname); |
177 | if (ret.isbold == -1) return 0; |
178 | settingname = dupcat(name, "CharSet", NULL); |
179 | ret.charset = read_setting_i(handle, settingname, -1); |
180 | sfree(settingname); |
181 | if (ret.charset == -1) return 0; |
182 | settingname = dupcat(name, "Height", NULL); |
183 | ret.height = read_setting_i(handle, settingname, INT_MIN); |
184 | sfree(settingname); |
185 | if (ret.height == INT_MIN) return 0; |
9a30e26b |
186 | *result = ret; |
187 | return 1; |
188 | } |
189 | |
190 | void write_setting_fontspec(void *handle, const char *name, FontSpec font) |
191 | { |
192 | char *settingname; |
193 | |
194 | write_setting_s(handle, name, font.name); |
195 | settingname = dupcat(name, "IsBold", NULL); |
196 | write_setting_i(handle, settingname, font.isbold); |
197 | sfree(settingname); |
198 | settingname = dupcat(name, "CharSet", NULL); |
199 | write_setting_i(handle, settingname, font.charset); |
200 | sfree(settingname); |
201 | settingname = dupcat(name, "Height", NULL); |
202 | write_setting_i(handle, settingname, font.height); |
203 | sfree(settingname); |
204 | } |
205 | |
206 | int read_setting_filename(void *handle, const char *name, Filename *result) |
207 | { |
208 | return !!read_setting_s(handle, name, result->path, sizeof(result->path)); |
209 | } |
210 | |
211 | void write_setting_filename(void *handle, const char *name, Filename result) |
212 | { |
213 | write_setting_s(handle, name, result.path); |
214 | } |
215 | |
32874aea |
216 | void close_settings_r(void *handle) |
217 | { |
218 | RegCloseKey((HKEY) handle); |
d1622aed |
219 | } |
220 | |
c85623f9 |
221 | void del_settings(const char *sessionname) |
32874aea |
222 | { |
d1622aed |
223 | HKEY subkey1; |
224 | char *p; |
225 | |
226 | if (RegOpenKey(HKEY_CURRENT_USER, puttystr, &subkey1) != ERROR_SUCCESS) |
227 | return; |
228 | |
3d88e64d |
229 | p = snewn(3 * strlen(sessionname) + 1, char); |
d1622aed |
230 | mungestr(sessionname, p); |
231 | RegDeleteKey(subkey1, p); |
dcbde236 |
232 | sfree(p); |
d1622aed |
233 | |
234 | RegCloseKey(subkey1); |
235 | } |
d5859615 |
236 | |
d1622aed |
237 | struct enumsettings { |
238 | HKEY key; |
239 | int i; |
240 | }; |
241 | |
32874aea |
242 | void *enum_settings_start(void) |
243 | { |
d1622aed |
244 | struct enumsettings *ret; |
245 | HKEY key; |
246 | |
5f2df4d2 |
247 | if (RegOpenKey(HKEY_CURRENT_USER, puttystr, &key) != ERROR_SUCCESS) |
32874aea |
248 | return NULL; |
d1622aed |
249 | |
3d88e64d |
250 | ret = snew(struct enumsettings); |
d1622aed |
251 | if (ret) { |
32874aea |
252 | ret->key = key; |
253 | ret->i = 0; |
d1622aed |
254 | } |
255 | |
256 | return ret; |
257 | } |
258 | |
32874aea |
259 | char *enum_settings_next(void *handle, char *buffer, int buflen) |
260 | { |
261 | struct enumsettings *e = (struct enumsettings *) handle; |
d1622aed |
262 | char *otherbuf; |
3d88e64d |
263 | otherbuf = snewn(3 * buflen, char); |
60371ab3 |
264 | if (RegEnumKey(e->key, e->i++, otherbuf, 3 * buflen) == ERROR_SUCCESS) { |
32874aea |
265 | unmungestr(otherbuf, buffer, buflen); |
266 | sfree(otherbuf); |
267 | return buffer; |
60371ab3 |
268 | } else { |
269 | sfree(otherbuf); |
32874aea |
270 | return NULL; |
60371ab3 |
271 | } |
d1622aed |
272 | } |
273 | |
32874aea |
274 | void enum_settings_finish(void *handle) |
275 | { |
276 | struct enumsettings *e = (struct enumsettings *) handle; |
d1622aed |
277 | RegCloseKey(e->key); |
dcbde236 |
278 | sfree(e); |
d1622aed |
279 | } |
280 | |
c85623f9 |
281 | static void hostkey_regname(char *buffer, const char *hostname, |
282 | int port, const char *keytype) |
32874aea |
283 | { |
d4857987 |
284 | int len; |
285 | strcpy(buffer, keytype); |
286 | strcat(buffer, "@"); |
287 | len = strlen(buffer); |
32874aea |
288 | len += sprintf(buffer + len, "%d:", port); |
d4857987 |
289 | mungestr(hostname, buffer + strlen(buffer)); |
290 | } |
291 | |
c85623f9 |
292 | int verify_host_key(const char *hostname, int port, |
293 | const char *keytype, const char *key) |
32874aea |
294 | { |
d5859615 |
295 | char *otherstr, *regname; |
296 | int len; |
297 | HKEY rkey; |
298 | DWORD readlen; |
299 | DWORD type; |
300 | int ret, compare; |
301 | |
302 | len = 1 + strlen(key); |
303 | |
304 | /* |
305 | * Now read a saved key in from the registry and see what it |
306 | * says. |
307 | */ |
3d88e64d |
308 | otherstr = snewn(len, char); |
309 | regname = snewn(3 * (strlen(hostname) + strlen(keytype)) + 15, char); |
d5859615 |
310 | |
d4857987 |
311 | hostkey_regname(regname, hostname, port, keytype); |
d5859615 |
312 | |
5f2df4d2 |
313 | if (RegOpenKey(HKEY_CURRENT_USER, PUTTY_REG_POS "\\SshHostKeys", |
314 | &rkey) != ERROR_SUCCESS) |
32874aea |
315 | return 1; /* key does not exist in registry */ |
d5859615 |
316 | |
317 | readlen = len; |
318 | ret = RegQueryValueEx(rkey, regname, NULL, &type, otherstr, &readlen); |
319 | |
320 | if (ret != ERROR_SUCCESS && ret != ERROR_MORE_DATA && |
32874aea |
321 | !strcmp(keytype, "rsa")) { |
322 | /* |
323 | * Key didn't exist. If the key type is RSA, we'll try |
324 | * another trick, which is to look up the _old_ key format |
325 | * under just the hostname and translate that. |
326 | */ |
327 | char *justhost = regname + 1 + strcspn(regname, ":"); |
3d88e64d |
328 | char *oldstyle = snewn(len + 10, char); /* safety margin */ |
32874aea |
329 | readlen = len; |
330 | ret = RegQueryValueEx(rkey, justhost, NULL, &type, |
331 | oldstyle, &readlen); |
332 | |
333 | if (ret == ERROR_SUCCESS && type == REG_SZ) { |
334 | /* |
335 | * The old format is two old-style bignums separated by |
336 | * a slash. An old-style bignum is made of groups of |
337 | * four hex digits: digits are ordered in sensible |
338 | * (most to least significant) order within each group, |
339 | * but groups are ordered in silly (least to most) |
340 | * order within the bignum. The new format is two |
341 | * ordinary C-format hex numbers (0xABCDEFG...XYZ, with |
342 | * A nonzero except in the special case 0x0, which |
343 | * doesn't appear anyway in RSA keys) separated by a |
344 | * comma. All hex digits are lowercase in both formats. |
345 | */ |
346 | char *p = otherstr; |
347 | char *q = oldstyle; |
348 | int i, j; |
349 | |
350 | for (i = 0; i < 2; i++) { |
351 | int ndigits, nwords; |
352 | *p++ = '0'; |
353 | *p++ = 'x'; |
354 | ndigits = strcspn(q, "/"); /* find / or end of string */ |
355 | nwords = ndigits / 4; |
356 | /* now trim ndigits to remove leading zeros */ |
357 | while (q[(ndigits - 1) ^ 3] == '0' && ndigits > 1) |
358 | ndigits--; |
359 | /* now move digits over to new string */ |
360 | for (j = 0; j < ndigits; j++) |
361 | p[ndigits - 1 - j] = q[j ^ 3]; |
362 | p += ndigits; |
363 | q += nwords * 4; |
364 | if (*q) { |
365 | q++; /* eat the slash */ |
366 | *p++ = ','; /* add a comma */ |
367 | } |
368 | *p = '\0'; /* terminate the string */ |
369 | } |
370 | |
371 | /* |
372 | * Now _if_ this key matches, we'll enter it in the new |
373 | * format. If not, we'll assume something odd went |
374 | * wrong, and hyper-cautiously do nothing. |
375 | */ |
376 | if (!strcmp(otherstr, key)) |
377 | RegSetValueEx(rkey, regname, 0, REG_SZ, otherstr, |
378 | strlen(otherstr) + 1); |
379 | } |
d5859615 |
380 | } |
381 | |
382 | RegCloseKey(rkey); |
383 | |
384 | compare = strcmp(otherstr, key); |
385 | |
386 | sfree(otherstr); |
387 | sfree(regname); |
388 | |
389 | if (ret == ERROR_MORE_DATA || |
32874aea |
390 | (ret == ERROR_SUCCESS && type == REG_SZ && compare)) |
391 | return 2; /* key is different in registry */ |
d5859615 |
392 | else if (ret != ERROR_SUCCESS || type != REG_SZ) |
32874aea |
393 | return 1; /* key does not exist in registry */ |
d5859615 |
394 | else |
32874aea |
395 | return 0; /* key matched OK in registry */ |
d5859615 |
396 | } |
397 | |
c85623f9 |
398 | void store_host_key(const char *hostname, int port, |
399 | const char *keytype, const char *key) |
32874aea |
400 | { |
d5859615 |
401 | char *regname; |
402 | HKEY rkey; |
403 | |
3d88e64d |
404 | regname = snewn(3 * (strlen(hostname) + strlen(keytype)) + 15, char); |
d5859615 |
405 | |
d4857987 |
406 | hostkey_regname(regname, hostname, port, keytype); |
d5859615 |
407 | |
408 | if (RegCreateKey(HKEY_CURRENT_USER, PUTTY_REG_POS "\\SshHostKeys", |
fc2464c6 |
409 | &rkey) == ERROR_SUCCESS) { |
410 | RegSetValueEx(rkey, regname, 0, REG_SZ, key, strlen(key) + 1); |
411 | RegCloseKey(rkey); |
412 | } /* else key does not exist in registry */ |
413 | |
414 | sfree(regname); |
d5859615 |
415 | } |
416 | |
417 | /* |
418 | * Find the random seed file path and store it in `seedpath'. |
419 | */ |
32874aea |
420 | static void get_seedpath(void) |
421 | { |
d5859615 |
422 | HKEY rkey; |
423 | DWORD type, size; |
424 | |
425 | size = sizeof(seedpath); |
426 | |
32874aea |
427 | if (RegOpenKey(HKEY_CURRENT_USER, PUTTY_REG_POS, &rkey) == |
428 | ERROR_SUCCESS) { |
d5859615 |
429 | int ret = RegQueryValueEx(rkey, "RandSeedFile", |
430 | 0, &type, seedpath, &size); |
431 | if (ret != ERROR_SUCCESS || type != REG_SZ) |
432 | seedpath[0] = '\0'; |
433 | RegCloseKey(rkey); |
434 | } else |
435 | seedpath[0] = '\0'; |
436 | |
437 | if (!seedpath[0]) { |
438 | int len, ret; |
439 | |
32874aea |
440 | len = |
441 | GetEnvironmentVariable("HOMEDRIVE", seedpath, |
442 | sizeof(seedpath)); |
443 | ret = |
444 | GetEnvironmentVariable("HOMEPATH", seedpath + len, |
445 | sizeof(seedpath) - len); |
d5859615 |
446 | if (ret == 0) { /* probably win95; store in \WINDOWS */ |
447 | GetWindowsDirectory(seedpath, sizeof(seedpath)); |
448 | len = strlen(seedpath); |
449 | } else |
450 | len += ret; |
32874aea |
451 | strcpy(seedpath + len, "\\PUTTY.RND"); |
d5859615 |
452 | } |
453 | } |
454 | |
32874aea |
455 | void read_random_seed(noise_consumer_t consumer) |
456 | { |
d5859615 |
457 | HANDLE seedf; |
458 | |
459 | if (!seedpath[0]) |
460 | get_seedpath(); |
461 | |
462 | seedf = CreateFile(seedpath, GENERIC_READ, |
463 | FILE_SHARE_READ | FILE_SHARE_WRITE, |
464 | NULL, OPEN_EXISTING, 0, NULL); |
465 | |
466 | if (seedf != INVALID_HANDLE_VALUE) { |
467 | while (1) { |
468 | char buf[1024]; |
469 | DWORD len; |
470 | |
471 | if (ReadFile(seedf, buf, sizeof(buf), &len, NULL) && len) |
32874aea |
472 | consumer(buf, len); |
d5859615 |
473 | else |
474 | break; |
475 | } |
476 | CloseHandle(seedf); |
477 | } |
478 | } |
479 | |
32874aea |
480 | void write_random_seed(void *data, int len) |
481 | { |
d5859615 |
482 | HANDLE seedf; |
483 | |
484 | if (!seedpath[0]) |
485 | get_seedpath(); |
486 | |
487 | seedf = CreateFile(seedpath, GENERIC_WRITE, 0, |
488 | NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL); |
489 | |
490 | if (seedf != INVALID_HANDLE_VALUE) { |
491 | DWORD lenwritten; |
492 | |
493 | WriteFile(seedf, data, len, &lenwritten, NULL); |
494 | CloseHandle(seedf); |
495 | } |
496 | } |
497 | |
498 | /* |
499 | * Recursively delete a registry key and everything under it. |
500 | */ |
32874aea |
501 | static void registry_recursive_remove(HKEY key) |
502 | { |
d5859615 |
503 | DWORD i; |
32874aea |
504 | char name[MAX_PATH + 1]; |
d5859615 |
505 | HKEY subkey; |
506 | |
507 | i = 0; |
508 | while (RegEnumKey(key, i, name, sizeof(name)) == ERROR_SUCCESS) { |
32874aea |
509 | if (RegOpenKey(key, name, &subkey) == ERROR_SUCCESS) { |
510 | registry_recursive_remove(subkey); |
511 | RegCloseKey(subkey); |
512 | } |
513 | RegDeleteKey(key, name); |
d5859615 |
514 | } |
515 | } |
516 | |
32874aea |
517 | void cleanup_all(void) |
518 | { |
d5859615 |
519 | HKEY key; |
520 | int ret; |
32874aea |
521 | char name[MAX_PATH + 1]; |
d5859615 |
522 | |
523 | /* ------------------------------------------------------------ |
524 | * Wipe out the random seed file. |
525 | */ |
526 | if (!seedpath[0]) |
527 | get_seedpath(); |
528 | remove(seedpath); |
529 | |
530 | /* ------------------------------------------------------------ |
531 | * Destroy all registry information associated with PuTTY. |
532 | */ |
533 | |
534 | /* |
535 | * Open the main PuTTY registry key and remove everything in it. |
536 | */ |
32874aea |
537 | if (RegOpenKey(HKEY_CURRENT_USER, PUTTY_REG_POS, &key) == |
538 | ERROR_SUCCESS) { |
539 | registry_recursive_remove(key); |
540 | RegCloseKey(key); |
d5859615 |
541 | } |
542 | /* |
543 | * Now open the parent key and remove the PuTTY main key. Once |
544 | * we've done that, see if the parent key has any other |
545 | * children. |
546 | */ |
547 | if (RegOpenKey(HKEY_CURRENT_USER, PUTTY_REG_PARENT, |
32874aea |
548 | &key) == ERROR_SUCCESS) { |
549 | RegDeleteKey(key, PUTTY_REG_PARENT_CHILD); |
550 | ret = RegEnumKey(key, 0, name, sizeof(name)); |
551 | RegCloseKey(key); |
552 | /* |
553 | * If the parent key had no other children, we must delete |
554 | * it in its turn. That means opening the _grandparent_ |
555 | * key. |
556 | */ |
557 | if (ret != ERROR_SUCCESS) { |
558 | if (RegOpenKey(HKEY_CURRENT_USER, PUTTY_REG_GPARENT, |
559 | &key) == ERROR_SUCCESS) { |
560 | RegDeleteKey(key, PUTTY_REG_GPARENT_CHILD); |
561 | RegCloseKey(key); |
562 | } |
563 | } |
d5859615 |
564 | } |
565 | /* |
566 | * Now we're done. |
567 | */ |
568 | } |